CVE-2019-19330
Publication date 27 November 2019
Last updated 25 August 2025
Ubuntu priority
Description
The HTTP/2 implementation in HAProxy before 2.0.10 mishandles headers, as demonstrated by carriage return (CR, ASCII 0xd), line feed (LF, ASCII 0xa), and the zero character (NUL, ASCII 0x0), aka Intermediary Encapsulation Attacks.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| haproxy | ||
| 18.04 LTS bionic |
Fixed 1.8.8-1ubuntu0.9
|
|
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty | Not in release |
Patch details
| Package | Patch details |
|---|---|
| haproxy |
Severity score breakdown
CVSS version: CVSS v3.0
Base score
9.8 · Critical
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
Related Ubuntu Security Notices (USN)
- USN-4212-1
- HAProxy vulnerability
- 4 December 2019
Other references
- https://git.haproxy.org/?p=haproxy.git;a=commit;h=54f53ef7ce4102be596130b44c768d1818570344
- https://git.haproxy.org/?p=haproxy.git;a=commit;h=146f53ae7e97dbfe496d0445c2802dd0a30b0878
- https://git.haproxy.org/?p=haproxy-2.0.git;a=commit;h=ac198b92d461515551b95daae20954b3053ce87e
- https://tools.ietf.org/html/rfc7540#section-10.3
- https://www.cve.org/CVERecord?id=CVE-2019-19330